Assume I have a statement like
Table[ {Mod[k, h], PowerMod[k, -1, h]}, {k, 1, h - 1}]
How can I select the elements in the table which fullfill the condition
PowerMod::ninv: 2 is not invertible modulo xxx
I would like a statement with a form like
If[PowerMod[2, -1, h] == ninv, 1, 0]
but this does not work.
More general how to catch exceptions in calculation for each type of exception condition, eg in this case PowerMod::ninv